Electrical heating appliance



April 15 1924. 1,490,767

E. DE F. CURTIS ELECTRICAL HEATING APPLIANCE Filed Jan. 23, 1922 Patented Apr. 15, 1924.

UNITED STATES 1,490,767 PATENT orsica.

31mm: I. CURTIS, 01' WAYNE, rnmtmvanu.

ELECTRICAL HEATING APPLIANCE.

Application Med January 83, 1982. lerl'al i o. 831,841.

To all whom it may concern:

Be it known that I, EDMUND on F. Cund T18, a citizen of the United States, residing at Wayne, in the county of Delaware table ad'unct for electrically food or liquids.

The primary object in view is to provide a useful support or stand car ing an electric heating element which wil readily and efliciently serve the function of a stove capable of being moved from place to place, and one which may be manufactured at "a nominal cost while at the same time possessing such ornamental characteristics as will lend attractiveness to its 1 utility rather than detract therefrom.

The novelty of the invention resides primarily in the provision of a body of refractory material capable of receiving an artistic finish, and "having a seat for an electric heating element, supporting means for said body, and means for effectively insulating the support from the heat to thereby prevent likelihood of marring the object upon which the appliance may be resting.

These and such other objects as may hereinafter appear are attained by the novel construction, combination and arrangement of arts to be hereinafter specifica ly descri d and claimed.

Reference will now be had to the accompanying drawing forming a part of this specification, wherein:

Figure 1 is a perspective view of a device constructed in accordance with this invention.

Figure 2 is a top plan view thereof.

Figure 3 is a vertical sectional view through the appliance.

Fi re 4 is an enlarged fragmentary section yiew showing more clearly the means for fastening the resistance unit in its seat.

Figure 5 1s a detail view of the fastenmeans for. the resistance unit.

ig. 6 is an enlarged sectional view showing a modified means for retaining the resistance unit in its seat. y

Throughout the following detailed de- .shown in Figure 5 and desi script-ion and on the several fi res of the rawing, similar parts are re erred to by like reference characters.

Referrin to the drawing, it is to be understood t at the electric heating device forming the subect-matter ofthis invention ma be m e of any configuration or size WhlCh is-found suitable for the purposes of providing a portable heating device of this character. The invention comprises primarily the top or body portion 1 of pottery or refractory material and formed with an elongated groove or seat 2.in which is positioned the heating element or resistance unit 3. This resistance member may be held in its seat byany desired means, such as retort cement, but preferably I employ a detachable fastening such as ated by the reference character 4, said astening comprising a length of wire doubled to engage with the resistance as shown clearly in Figure 4, and having its ends bent laterally as indicated at 5., the body 1 being provided, of course, with a passage through which this wire member is adapted to pass. The groove or seat 2 for the resistance unit is sufiiciently deep to prevent contact of the resistance with the object which is seated upon the surface of the body for heating purposes, and I desire it to be understood that the configuration of this groove may be modified to accommodate a resistance member of greater or less len th, size or arrangement.

'fhe body 1 is supported by a base 6 which may be of similar heat-resisting material as the" body and of a desired configuration to lend symmetry to the article. At spaced ointsv openings? are provided through this base member so as to facilitate radiation of any heat which should be transferred thereto, and I prefer to employ spherical foot pieces 8 for the base- 'portion, so that a minimum amount of surface contact is used. The knob-like feet 8 hold the heating appliance in spaced relation to the table or other object upon which the appliance is dis osed, and naturally tend to prevent likelihood of marring the finish of the surface of said object. e

. The body 1 is attached to the base portion b means of a central fastening member 9 aving at its up r end the lock nuts 10. which are imbedde in the body material or secured therein by retort cement as desired. Intermediate the body 1 and the base section 6 I preferably arrange an insulating plate 11 of nonconductive material curely and detachably fasten the various as indicated at 17,. and any sections together to form a-unit. The electric conductors 13 are attached to the appliance in any desired manner and secured to the ends of the resistance unit 3, said conductors preferably extending throu h a projection or boss 14 on the base whic is provided in the molding of the latter, the conductors extending outwardly a suflicient distance'to form terminal posts as indicated at 15 to receive. the current supply termif nals 16. The, outer surface of the refractory material of this ap liance is designed to receive a glazed .finls of any desired color,

other ornamentality or design to provide an artistic apprliance of this character.

Figure 6 I have shown a modified method of securing the resistance unit in its groove against displacement therefrom, consistingin the provision of a bridge 18, but as hereinbefore premised I prefer to employ the fastening means 4 arranged at suitable intervals as shown in Figure 2. It will be ap arent that the article hereinbefore descri may very cheaply manufactured and assembled yet possess the same utility and efiectiveness as'many of the expensive metallic portable heating devices which are well known.

Ha thus described m invention, what l laim as new'and desire to secure by Letters Patent is:

1. A heating appliance of the clam'described comprising a body of refractory material hav' an elongated groove therein a heating unit seated in said groove, a ra' base for said body, electrical insulat' means intermediate said base and bod an means for securing said body and insu ting means to the base. 7

2. A portable electric heating device 0 the class described comprising a body section having a groove in its upper face, a resistance element disposed in said I retaining means for said element exten through the body an base unit for supporting said body upon its upper face, and means for detachably securing the body to said base.

3. A portable electric heatin 'device of the class described com risin afimdy of refractory material capa le 0 receiving an artistic finish and having a groove therein, a resistance element in said groove, fastening members ging said resistance element at intervals and passing through the y to hold said element in the groove, a detachable base for said body provided with openings therein, an insulating member intermediate the resistance fastening1 members of the body and said base, a fastening means for securing the body and insulating member to the base. V

In testimony whereof I aflix my signature.

' EDMUND n: F. CURTIS. 

